Deal with ca and CA transparency operators in pdf. add comments to generated classes.

experimental/PdfViewer/SkPdfType2PatternDictionary_autogen.h

 #ifndef __DEFINED__SkPdfType2PatternDictionary
 #define __DEFINED__SkPdfType2PatternDictionary
 
 #include "SkPdfEnums_autogen.h"
 #include "SkPdfArray_autogen.h"
 #include "SkPdfDictionary_autogen.h"
 
+// Entries in a type 2 pattern dictionary
 class SkPdfType2PatternDictionary : public SkPdfDictionary {
 public:
   virtual SkPdfObjectType getType() const { return kType2PatternDictionary_SkPdfObjectType;}
   virtual SkPdfObjectType getTypeEnd() const { return (SkPdfObjectType)(kType2PatternDictionary_SkPdfObjectType + 1);}
 public:
   virtual SkPdfType2PatternDictionary* asType2PatternDictionary() {return this;}
   virtual const SkPdfType2PatternDictionary* asType2PatternDictionary() const {return this;}
 
 private:
   virtual SkPdfALinkAnnotationDictionary* asALinkAnnotationDictionary() {return NULL;}
@@ skipping 496 matching lines @@
 
 public:
 private:
 public:
   SkPdfType2PatternDictionary(const PdfMemDocument* podofoDoc = NULL, const PdfObject* podofoObj = NULL) : SkPdfDictionary(podofoDoc, podofoObj) {}
 
   virtual bool valid() const {return true;}
 
   SkPdfType2PatternDictionary& operator=(const SkPdfType2PatternDictionary& from) {this->fPodofoDoc = from.fPodofoDoc; this->fPodofoObj = from.fPodofoObj; return *this;}
 
+/** (Optional) The type of PDF object that this dictionary describes; if present,
+ *  must be Pattern for a pattern dictionary.
+**/
+  bool has_Type() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Type", "", NULL));
+  }
+
   long Type() const {
     long ret;
     if (LongFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Type", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return 0;
   }
 
+/** (Required) A code identifying the type of pattern that this dictionary de-
+ *  scribes; must be 2 for a shading pattern.
+**/
+  bool has_PatternType() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "PatternType", "", NULL));
+  }
+
   long PatternType() const {
     long ret;
     if (LongFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "PatternType", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return 0;
   }
 
+/** (Required) A shading object (see below) defining the shading pattern's gradient
+ *  fill. The contents of the dictionary consist of the entries in Table 4.25 on page
+ *  234, plus those in one of Tables 4.26 to 4.31 on pages 237 to 253.
+**/
+  bool has_Shading() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Shading", "", NULL));
+  }
+
   bool isShadingADictionary() const {
     SkPdfObject* ret = NULL;
     if (!ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Shading", "", &ret)) return false;
     return ret->podofo()->GetDataType() == ePdfDataType_Dictionary;
   }
 
   SkPdfDictionary* getShadingAsDictionary() const {
     SkPdfDictionary* ret = NULL;
     if (DictionaryFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Shading", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return NULL;
   }
 
   bool isShadingAStream() const {
     SkPdfObject* ret = NULL;
     if (!ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Shading", "", &ret)) return false;
     return ret->podofo()->HasStream();
   }
 
   SkPdfStream getShadingAsStream() const {
     SkPdfStream ret = SkPdfStream();
     if (StreamFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Shading", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return SkPdfStream();
   }
 
+/** (Optional) An array of six numbers specifying the pattern matrix (see Section
+ *  4.6.1, "General Properties of Patterns"). Default value: the identity matrix
+ *  [1 0 0 1 0 0].
+**/
+  bool has_Matrix() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Matrix", "", NULL));
+  }
+
   SkPdfArray Matrix() const {
     SkPdfArray ret;
     if (ArrayFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Matrix", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return SkPdfArray();
   }
 
+/** (Optional) A graphics state parameter dictionary (see Section 4.3.4, "Graph-
+ *  ics State Parameter Dictionaries") containing graphics state parameters to be
+ *  put into effect temporarily while the shading pattern is painted. Any parame-
+ *  ters that are not so specified are inherited from the graphics state that was in
+ *  effect at the beginning of the content stream in which the pattern is defined
+ *  as a resource.
+**/
+  bool has_ExtGState() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "ExtGState", "", NULL));
+  }
+
   SkPdfDictionary* ExtGState() const {
     SkPdfDictionary* ret;
     if (DictionaryFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "ExtGState", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return NULL;
   }
 
 };
 
 #endif  // __DEFINED__SkPdfType2PatternDictionary